Materials Resource Center
Compare material families by end use, manufacturing process, geometry, finish, environment and validation responsibility before a grade is locked into drawings or tooling.
Direct Answer
Start with product use and failure risk, then compare environment, load, temperature, chemicals, appearance, process, quantity, compliance and supply continuity. A material name such as ABS, PC, HDPE or aluminum is only a family; the production grade, supplier, additives, color and validation method determine whether the selection is suitable.
Material by Process
The table is a selection framework, not a universal approval. Final material and grade decisions require product data and buyer-defined validation.
| Process | Common material directions | Questions to close |
|---|---|---|
| Injection molding | ABS, PP, PC, PA, POM, PMMA, HDPE and engineering grades | Wall, draft, ribs, bosses, inserts, shrinkage, gate, ejection, appearance and end-use validation |
| Rotational molding | LLDPE, HDPE and project-specific rotational-molding grades | Wall distribution, radii, split line, inserts, ports, charge weight, heating cycle and UV/environment |
| Blow molding | HDPE, PP, PET and application-specific grades | Parison, pinch-off, neck/finish, handle, wall distribution, drop, compatibility and leak boundary |
| CNC machining | Aluminum, stainless steel, carbon steel, brass and engineering plastics | Stock form, tolerance, tool access, deformation, surface finish, deburring and inspection |
| Sheet metal / stamping | Carbon steel, stainless steel, aluminum and selected copper alloys | Thickness, bend radius, grain, springback, weld access, flatness, coating and cosmetic side |
| Die casting | Aluminum and zinc alloys | Draft, wall transition, ribs, porosity-sensitive features, machining datums and finish |
| Assembly | Manufactured parts plus approved seals, fasteners, electronics and bought-out components | Compatibility, tolerance stack, torque, access, cleanliness, change control, testing and packing |
Material Families
Use these summaries to prepare an RFQ. Technical data sheets, supplier declarations and samples remain necessary where performance or compliance matters.
ABS
Balanced stiffness, impact and cosmetic performance for indoor equipment housings, appliance parts and control products. Outdoor use requires grade-specific UV and weathering review.
PP
Low density and chemical resistance make PP useful for caps, fluid-handling parts, covers and selected industrial products. Creep, temperature and dimensional stability must be checked.
PC
High impact strength and heat capability can suit protective covers, viewing parts and equipment housings. Stress cracking, UV, flame rating and chemical exposure depend on the exact grade.
PA / Nylon
PA6, PA66 and reinforced grades can provide strength and wear performance. Moisture absorption changes dimensions and properties, so conditioning and tolerance assumptions matter.
POM / Acetal
Low friction and good dimensional behavior make POM useful for moving or precision components. Bonding, painting and certain chemical or high-temperature conditions need care.
HDPE / LLDPE
Impact, chemical resistance and large hollow-part capability support tanks, cleaning equipment and outdoor components. Stiffness, wall distribution, UV and creep must be validated for the application.
PMMA / Acrylic
Optical clarity and surface appearance are strengths, while impact, solvent exposure and assembly stress require review. PC may be a better direction where impact dominates.
Aluminum
Low weight, machinability and corrosion behavior support enclosures, heat-transfer parts, brackets and frames. Alloy, temper, wall, tolerance and joining route must match the process.
Stainless Steel
Corrosion resistance and durability support fluid, outdoor and service-intensive products. Grade, forming, welding, passivation, finish direction and cost should be defined early.
Carbon / Coated Steel
Cost-effective strength suits cabinets, chassis and structural parts. Corrosion protection, weld distortion, flatness, edge condition and coating allowance are key controls.
Zinc and Aluminum Casting Alloys
Casting can combine geometry, stiffness and production efficiency at volume. Draft, wall transitions, porosity-sensitive areas, machining datums and finish expectations must be included in DFM.
Tool Steels
Steel selection depends on tool life, resin, corrosion, polish, texture, repair, heat treatment and maintenance. A named steel alone does not define the complete tool specification.
Material Selection Route
Environment, duty cycle, contact materials, target life and failure consequences.
Wall, ribs, bosses, threads, sealing faces, loads and mating components.
Volume, size, tolerance, appearance, investment and design maturity.
Supplier data, availability, additives, color and processing requirements.
Choose evidence that answers fit, appearance, process and function questions.
Record grade, supplier, alternative policy, sample, inspection and change route.
Materials FAQ
Compare impact, heat, UV, chemicals, flame requirement, dimensional stability, appearance, wall design, volume and validation. PC is not automatically better; the exact grade and product environment decide.
UV-stabilized HDPE, LLDPE, PP, PC, PC/ABS and other engineering grades may be possible. The required life, temperature, impact, moisture, color and test method must be defined.
Provide product use, load, temperature, chemicals, UV/moisture, target life, geometry, appearance, quantity, process, market and compliance responsibility.
Yes, as a procurement service. The scope should define manufacturer/grade, approved alternative policy, certificates, lot records, quantity, packing and delivery destination.
Sometimes, but not always. A prototype material or process may answer fit and design questions without reproducing molded anisotropy, shrinkage, texture or final performance.
Treat sustainability claims as grade- and supplier-specific. Review mechanical properties, appearance, process stability, compliance, traceability, change control and the buyer's validation plan.
Material and Procurement Review
Provide drawings, environment, loads, chemicals, temperature, quantity, appearance, process, destination, compliance needs and any approved supplier or grade restrictions.